<template>
<div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
        <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
        <!-- 为 ECharts 准备一个具备大小（宽高）的 DOM -->
        <div id="main" style="width: 800px;height:400px;"></div>
    </el-card>

</div>
</template>

<script>
import echarts from 'echarts'
import _ from 'lodash'
export default {
    data() {
        return {
            // 需要合并的对象
            options: {
                title: {
                    text: '用户来源'
                },
                tooltip: {
                    trigger: 'axis',
                    axisPointer: {
                        type: 'cross',
                        label: {
                            backgroundColor: '#E9EEF3'
                        }
                    }
                },
                grid: {
                    left: '3%',
                    right: '4%',
                    bottom: '3%',
                    containLabel: true
                },
                xAxis: [{
                    boundaryGap: false
                }],
                yAxis: [{
                    type: 'value'
                }]
            }
        }
    },
    created() {

    },
    // 此时页面上的元素已经渲染完毕了
    async mounted() {
        // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'))

        const {
            data: res
        } = await this.$http.get('reports/type/1')

        // 指定图表的配置项和数据
        const result = _.merge(res.data, this.options)
        // 使用刚指定的配置项和数据显示图表。
        myChart.setOption(result)
    },
    methods: {

    }
}
</script>

<style lang="less" scoped>

</style>
